Reports and Regulations
Seattle must meet state and federal regulatory requirements in order to comply with the Clean Water Act. Seattle developed a 2010 CSO Reduction Plan Amendment (pdf) to describe the effort to reduce CSOs.
The program is regulated via National Pollutant Discharge Elimination System (NPDES) permits.
2010-2015 NPDES Combined Sewer System Permit Fact Sheet (pdf)
2010-2015 NPDES Combined Sewer System Permit (pdf)
One requirement in the current permit is to provide realtime online reporting of overflows in Seattle.
Status Report
Quarterly Progress Report (pdf)
Overflow Reports
The permit also requires monthly and annual reports of overflows in Seattle. All documents are in pdf format.
2012 Monthly Reports
Annual Reports
Monitoring Reports
Volume 1 - Final Flow Monitoring Summary Report
Volume 2 - Flow Monitoring Plan 2008-2009
Volume 3 - Flow Monitoring Plan 2009-2010